Water heater replacement cost, for an old tank traded for a new one of the same type, runs from $880 up to $2,000 in the Portland area, heater included, and most jobs sit near $1,350 (market data, November 2026) . About half of it buys the tank. What's left covers the installer's time, the permit, and whatever Oregon code says must be checked at the swap.
Already decided to go ahead? The water heater service page explains how we run that job. This guide sticks to the money.
How much is a new water heater, installed, in the Portland area?
Our price sheet has two lines for this work, both read in November 2026:
| Job | Range | Most land near | Counts as |
|---|---|---|---|
| Old tank out, new tank in, same fuel | $880 to $2,000 | $1,350 | heater and labour, with materials (regional market figures) |
| Seismic straps on a heater you keep | $150 to $400 | $250 | labour only (our estimate from local hourly rates) |
The top line is a single span for gas and electric tanks alike, and it isn't broken out by gallons. A 40 and a 50 both fit inside it. The bigger tank costs more over the counter, yet the install takes close to the same time: you drain, carry and connect either one in about the same afternoon .
The straps line isn't drawn from market quotes. It's hours times going rates around here . When the whole tank is being replaced, strapping normally comes with the install anyway.
On size, buy for the household you have today rather than copying the number off the old tank .
How much of the bill is labor?
By the market sheet's split, parts eat roughly half and the job takes about five hours. Run that on a $1,350 ticket and around $675 remains for the installer's work and overhead . Treat that as arithmetic from the sheet, not as a rate anyone charges by the hour; hourly handyman pricing is its own topic.
The hours go to the same steps every time. Close the cold supply and the gas or breaker. Drain the old unit, unhook it, get it out of the house. Set the replacement, hook it up, strap it, run the relief drain where it belongs. Fill, look for drips, and let it heat.
Location moves the clock most. A garage heater ten feet from the driveway is quick. A hallway closet with a narrow door, a crawl space or an attic means a harder carry, floor protection, and now and then pulling a door off to get the old tank past .
Why does a plumber charge this much for a water heater swap?
Every permit office around us requires a permit and an inspection for a replacement. The state calls a water heater "a type of pressure vessel," and one put in wrong can burst. Stack the required code items on top, covered further down, and the quote stops being a tank plus an hour.
Owners can do it themselves. Portland lets the person on the county property record do their own plumbing, though not through an LLC, and a permit is still needed.
What does the water heater permit cost in Portland, Beaverton or Washington County?
The office depends on the address. Inside city limits it's the City of Portland or the City of Beaverton; outside them, Washington County. From the fee schedules each office publishes, read November 2026:
| Office | Water heater fee | Notes |
|---|---|---|
| Washington County, outside city limits | the heater item is $37, yet any plumbing permit costs at least $236 | state surcharge added; FY 2026-27 schedule, effective July 1, 2026 |
| City of Portland | $63 for each water heater | schedule effective July 10, 2026 |
| City of Beaverton | no published figure found | ask the city's building office |
Put plainly, a one-heater permit from the county starts at $236 plus surcharge, though the line item says $37.
Plumbing contractors have another option: the state minor label, bought in place of a city or county permit when a heater is replaced. Think of it as a streamlined state permit with one inspection built in. Whichever one your installer uses, find out if its fee is already counted in the quote .
Which extra lines can a water heater quote carry?
Oregon settles this with one statewide interpretation, No. 2002, revised October 1, 2026. It lists what has to be considered when an old heater comes out and a new one goes in, and what need not be; the local building official keeps some discretion. Turned into quote lines:
| Quote line | Code says to check it at a swap? | Cost note |
|---|---|---|
| Earthquake straps | yes, OPSC 507.2 | usually built into the install; see the straps row above for the standalone price |
| Thermal expansion control, often a small expansion tank | yes, 608.3 | an added part and labour; no figure on our sheet |
| Relief valve drain | yes, its end point is checked, 608.5 | extra only if the old drain is missing or ends in the wrong spot |
| Stand in a garage | yes, garage installs only, 507.6 | extra if the old tank stood right on the concrete |
| Combustion air for gas | yes, 505.0 | comes up mainly with closet installs |
| Drip pan | no, 507.4 | optional; ask why it's there |
| Upsized water pipes | no, 610.0 | shouldn't show up unannounced |
| House pressure over 80 psi | no, 608.2 | optional when replacing |
The state says the interpretation binds every jurisdiction, under OAR 918-008-0110. That makes it a fair yardstick: a "yes" row is not a sales add-on, and a "no" row is your call.
A heater that lives in the garage should get the stand on its quote. Fastening details for the straps are on our water heater page. Strapping is also only one piece of getting a house ready for a quake; seismic retrofit covers the rest of it .
Do tankless and heat pump units cost more to put in?
They do, and the range at the top doesn't cover them. That figure assumes a tank goes where a tank was. Moving to tankless or a heat pump is a different job.
Gas tankless often wants a larger gas supply and new venting. Some electric tankless and heat pump models need a fresh circuit from the panel. A heat pump heater also needs air around it and somewhere for condensate to drain, so a closet that held the old tank may be too tight. The gas or electrical changes can each call for a permit of their own, besides the plumbing one.
Gas line connections aren't something we do, so that side of a conversion isn't ours. We also have no dated market numbers for these units yet . A separate guide on tankless pricing is on the schedule.
Repair the old heater or replace it?
Get both priced, then go by what failed. Water seeping from the tank body means replacement, since the steel shell can't be patched.
Age shifts the answer. Once a tank is old enough to make you wonder, today's repair can be followed by a leak next winter, so have the replacement quoted on the same visit . Draining sediment is good for a sound tank; it does nothing for a leaking one.
Much of Bethany was built in the 1990s and 2000s. Those homes have reached 25 to 30 years, the stage where water heaters start showing up on owners' repair lists.
How should you compare two quotes for a new water heater?
Put them next to each other and go down this list:
- Tank size and fuel match on both.
- The permit or minor label is either included or listed as extra.
- You can see which code lines from the table above are priced in.
- It's clear whether taking the old tank away is included or left to you.
- There's a written contract once the total runs over $2,000.
Don't skip number six. Oregon requires a written contract and three notices on home jobs above $2,000, and a job quoted lower that climbs past the mark counts as well. The market range tops out right at $2,000, so a tank plus an expansion tank or a garage stand can tip over. Oregon's contract rules spells out what the paperwork must include .